Paper-feeding device



May s, 1925 1,536,670

I l.. a. GRAsBr-:RGER ET AL PAPER FEED'ING DEVICE v Filed Mali 15. 1922Patented May 5, 1925.,

* Unirse STATES PATENT OFFICE..

LAWRENCE B. GRASBERGER AND JAMES T. FAY, OF RICHMOND, VIRGINIA.

PAPER-FEEDNG DEVICE.

Application Iled `May 15,

T all 'Lo/wm t may concern.' Y

Be it known that we, LAWRENCE (inns nnnenr. and JAMES T. FAY, bothcitizens of the United States of America, of Richmond, county ofHenrico, State of Virginia, United States of` America, have inventedcertain new and useful improvements in Paper- Feeding Devices; and we dohereby declare` the followingto be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichlit ai pertains to make and use the saine, reference being had to theaccompanying drawings, and to letters or figures of reference marlredthereon, which form a part of this specification. y

Our application relates to feeding devices for paper for printing and'other' presses and wehave found that the principle involved inV ourPatent No. 1,416,404-, May 16, 1922, for feed roller is not onlyapplicable to roller forms of feed devices, but may be applied tovarious other types of devices, not only for printing presses but foriniineograph, hector graph and other manifolding machines.

The present application is therefore, a continuation of our aforesaidco-pending application and its object is a construction'in which thereis arigid non-frictional paper "e-eding element co-acting with ayielding element extending in the same surface as the surface of thenon-frictionalv or positively engaging element, and which upon'pressurewill yield and allow the rigid element to slightly protrude or extendbeyond the snr face of the yielding element. The material of which theyielding. element is made is preferably a friction material, suoli asrubber, but may be one that has less frictional action on paper, such asfelt, leather, cotton, or any other material that will slightly yield ordeform under pressure and resume its original form after the pressure isremoved.

Another object of our invention, especiah A ly of the roller type, islanimproved manner of mounting the rollers, so-that they may be easilyremoved Vfor washing oft' the ink. Other details of construction andmodifications will hereinafter be described with reference to thedrawings in which like parts are similarly designated and in which:

Figure 1 is a side view,`

Fig. 2 is a plan view, and

1922. Serial No. 561,118.

an enlarged scale the roller partly in cross-V section;

F ig. l' is an elevation of a serrated disc; Fig; 8 shows twoco-operating long paper feed rollers; y

Fig. 9 is an elevation of the roller shown in lfig. il;

Fig. 10 is a perspective view of an arcuate form of feeder partly insection;

Fig. 11 is a section of a flat form of feeder. All the various forms offeeding devices shown embody a rigid portion or element that positivelyengages the paper, but does not frictionally feed it, adjacent to theyielding material preferably, but not necessarily rubber, so that thefeeding surface upon the application of pressure will allow the rigidportion or element to slightly project or protrude and positively`engage the sheet, by slightly biting into Vthe" surface. lVhileabraiding niaterial for the rigid element s uch as anemery wheel or sandstone may do in some instances, it 1s generally unsuitable becauseparticles of these materials be- 'come loosened and fall on the surfaceto be move the roller A without the use of Vany tools. To this end theedge of the cross piece 2 is rounded as shownat 7 and the side piece 5is rounded as at S. These two sides -i and '5 are substantiallytriangular or sector shaped in form to forni a narrow front portion 9 inwhich is formed a slot 10. The pivoted side 5 is held in operativeposition by a coil spring 11 extending preferably between the two sidesand between the roller and the cross piece 2.

'The reduced ends 12 of the shaft 13of the ico roller A. has bearing inthese slots, and on the shaft are two flanges 14, screwed on to threadedportions 15.

The roller itself is composed of layers or discs of rubber constitutingrings 16 between which is included a metal plate formed as a serratedmetal disc 17 preferably of steel. These serrations are preferablytriangular or saw toothed as shown at 18 Fig. 7. The rubber rings ordises 1G and the metal serrated disc 1'? easily slip onto the shaft 13and are compressed, fastened or clamped by screwing `the flanges 14 onthe threaded portions 15 of sha-ft 13.

In the particular form shown, the flanges 14 are serrated, and actsomewhat as ratchets, there being stationary stops or pawls 19 thatco-operate with them. rIhese stops or pawls 19 are preferably adjustableto and from the flanges 14 by set sere fs 20. Then the roller is movedforward by the arm 1 the teeth of the flanges engage the pawls and areprevented from turning, while when the arm 1 recedes the roller can moveslightly to the front in slots 10, disengage from the pawls and rotateas it is drawn towards its initial position by the arm 1.

In the modified form of roller, Figs. and 6, the roller is shown coveredwith rubber 21 and small heaced brads 22 struck through it. rIhe headsQ3 of these brads lie against the surface of the shaft 13 and aresupported thereby.

In order that the serrated metal disc 17 or one provided with pins asthe case may be shall be held firmly between the two rubber rings ordiscs 1G, we cut holes Q4 through the disc. These holes are of anysuitable form, or they may be recesses as the maker may elect. IVhen theserrated metal disc 17 and the rubber rings 16 are clamped together bythe flanges 14 the sides of the rubber rings 1G squeeze into the holes24 and prevent the disc 17 from rotating when heavy pressure has to beapplied as in feeding card board, so that the roller turns as a unit,with the dises mutually locked laterally.

In Fig. 9 we have shown another construction of roller in which theshaft has secured to it the flange 2G by soldering or otherwise and isprovided with a threaded end 27 of reduced diameter. 'I'he other ange52S has integral with it a stub shaft 29 that is internally threaded andthe two parts are screwed together as shown. IBetween the rubber discsor rings 16 and alternating` with them, are metal discs 30 and 31. Theformer provided with several rows of projecting' pins and the latterwith a single row. The ends of the pins are flush with the surface ofthe roller. No mechanical means are necessary to key the rubber rings ormetal discs on the roller shaft so that when one or both flanges areremoved the rings and discs can be readily slipped otl` for replacementof worn parts.

In Fig. 8 we have shown two long paper feed rollers between which thepaper or card board is to be fed. These rollers are geared together bygear wheels 8.J and one of which gears may be removed when desirable ornecessary.

Any of the forms of roller surface shown in Figs. 4, 5, G, S and 9, maybe used for rollers to be mounted in the frame shown in Figs. 1-3 and ifone form is not suitable for the work in hand, another form may bequickly substituted and mounted in the frame.

F 10 shows an arcuate feeder having a hollow metal body 34, in which areset pi s 35 whose ends are flush with the surface of the exterior thickrubber band In Fig. 11 the body 258 is flat, has the pins 3G settherein. These pins pass through vthe yielding material S9 which is feltor leather.

In all the various constructions, there are provided a series ofmetallic points flush with the surface of the yielding material, whetherthese points be on a metal disc or pins passing through the rubber, feltor other friction surface.

The arrangement also shows .layers of yielding material alternating withmetallic sheets or plates, having points or sei-rations at their edges,and these points may be formed by sries of pins directly or by pins setin the edge'of a plate of metal. The pins constitute therefore, a forniof serration and have the same function and etleet. as teeth on theedges of the discs.

Idle claim:

1 il paper feeding device comprising rigid paper engaging means'positively engaging the paper, adjacent yielding means for frictionallyengaging the paper and flush with said rigid means and devicescompressing said means between them, whereby when pressure is applied tosaid device aid rigid means may project slightly beyond the surface ofsaid yielding means.

2. it paper feeding device comprising rigid substantially nonsfrictionalpaper engaging means, consistingof a series of metallic points, ayielding material capable ot frictionally engaging the paper, saidpoints being substai Yially iinsh with the surface of the yieldingmaterial and devices for coinpressingsaid means between them.

3. A paper feeding device Vcomprisingl rigid means, operating tosubstantially non"- frietionally engage the paper surrounded by yieldingmaterial operating to frietionally engage the paper. said rigid meansarranged to extend beyond the surface of said yielding means whenpressure is applied to said device and adjustable devices between whichsaid means and material are compressed.

lll)

CII

el, i paper feeding device, comprising a series of metallic pins, ayielding material lthe ends of said pins arranged liush with the ol'said pins ail anged flush with the rubber surface, and actuating wheelsbetween which said layers and plates are held.

7. ipaper feeding device, comprising a pair of sides, Vone of which ispivoted to move with respect to the other and a paper feeding rollerjournalled in said sides.

S. il paper feeding device, comprising a pair ot sides, one or which ispivoted to move with respect to said side, a spring to hold said pivotedside in normal position and a roller jeurnalled in said sides.

9. A paper feeding device, comprising a pair of sides, having bearingslots therein, a paper feed roller journalled in said slots Y betweenVsaid sides and having movement therein.

10. A paper feeding device, comprising a pair of sides having bearingslots therein, a roller between said slides and journalled in saidslots, a ratchet movable with said roller aiid'a stationary pawl forsaid ratchet.

ll; Atpaper feeding device, comprising a pair ot Vsides having bearingslots, therein, a roller journalled in said slots, a ratchet movable.with said roller and an adjustable stationaryl ratchet cooperating withsaid atchet p Y l2., In a paper feeding device, a pair of sides, one ofwhich is pivoted to swing with respect to the other a spring to held thepivoted side. in normal position, said sides having bearing slotstherein, a feed roller `journalled in said slots, a ratchet on saidroller and an adjustable stationary pawl cooperating with said ratchet.

18. ln a paper feeding device,a roller comprising discs of yieldingmaterial, alternating metal discs provided with points, a shaft in whichsaid discs are mounted Aand a pair oi flanges on said shalt betweenwhich said discs are clamped.

la. 1n a paper feeding device, a roller comprising discs of yieldingmaterial, metal discs having paper engaging points, a shaft on whichsaid discs are mounted and flanges on said shaft between which saiddiscs are clamped, said i'langes constituting ratehets.

l5. ln a paper feeding device, a roller comprising discs of rubber,alternating metal discs, a shaft on which said discs are mounted, saidshaft being threaded to clamp the discs between them,

16. in a paper feeding device, a roller Acomprising rubber discs,alternating metal discs, pins proj eeting from the edges of said latterdiscs whose ends are flush with the rubber surface, a shaft on which.the discs are mounted and anges on said shaft between which said discsare held.

l?. ln a paper feeding device, a roller comprising alternating discs ofmetal and ci a yielding material, a shaft on which said discs aremounted, means to eliiect the mutual lateral engagement of the metal andyielding material.A

18. In a paper ceding device, a roller Y comprising alternating discs ofmetal and rubber, said metal discs having perforations therein i":ormutual lateral engagement with the rubber to loci; them together.

ln testimony that we claim the oregoing as our invention, we have signedour names.

Lawiiniicn n. eiiiisnnnenn. .minis rriiv.

